John james spear



(No Model.) I

J. J. SPEAR. APPARATUS FOR REDUCING NOISE OF WATER FLOWING INTO TANKS.

vN0. 560,287.. Patented May 19, 1896.

fiaM ANDREW B.GRAHAM PHOTO-LITHOYWASNQNGION DC.

UNITED STATES PATENT OFFICE.

JOHN JAMES SPEAR, OF LANDPORT, ENGLAND.

APPARATUS FOR REDUCING NOISE OF WATER FLOWING INTO TANKS.

SPECIFICATION forming part of Letters Patent N 0. 560,287, dated May 19, 1896.

Application filed September 26, 1895. Serial No. 563,709. (No model.)

To all whom it may concern:

Be it known that I, JOHN JAMES SPEAR, glass merchant, a subject of the Queen of Great Britain, residing at No. 70 Orasswell Street, Landport, Hampshire, England, have invented certain new and useful Improvements in Apparatus for Reducing Noise of \Vater Flowing into Tanks, of which the following is a full, clear, and exact specification.

In tanks supplied with water, under pressure, especially water-closet cisterns and domestic supply-tanks, it is desirable to minimize the noise of the inrush of water when the tank is being filled. The apparatus which I have devised effects this object in a simple and efficient manner without interfering materially with the flow and without the use of moving parts which might possibly get out of order in use and interfere with its regular automatic working. The apparatus consists, essentially, of three successive chambers communicating with each other by means of passages or barrels the orifices of which are provided with screw-plugs designed to diminish the flow, and consequently the pressure at the exit. It may be constructed in various forms to suit special requirements, two of which are hereinafter described, and illustrated in the accompanying drawings,'or may be cast in one piece with the cistern to which it is attached.

I will now proceed to describe my invention in detail and with reference to the drawings accompanying my application, in which Figure 1 shows a section of the apparatus, of the usual construction, of more or less rectangular oblong shape. Fig. 2 shows a modification adapted to fit to the corner of a like; but may obviously be formed of many other materials without departing from the principle of the invention. I prefer to construct it about twelve inches long, about six and a half inches wide, and about four inches deep. The top of the pattern illustrated in Fig. 1 is provided with an inch flange with a raised rim one inch high from the outside, upon which the lid or cover is secured and made tight with rubber or leather packing. The rounded pattern shown in section at Fig. 2 is cast in two pieces and bolted together with an intervening layer of packing in the manner shown in the drawings. The brass plugs are preferably made so as to be easily removable in case of need.

The operation of the device is as follows: The water from the main or other source of supply enters at G. This inlet is provided with a cap or dome pierced with holes, preferably five in number and of about one-sixteenth of an inch diameter. This cap arrests any chips or solid bodies which might block up the apparatus. From G the water flows into the first chamber A and thence through the plug H, which has a hole about one-eighth of an inch in diameter for the purpose, into the conduitD. Thence the stream passes through inlet K into the second chamber B, where its impetus is further checked and its speed reduced by the configuration of the same. From B the stream passes through the brass plug I by means of three holes each of one thirty-second of an inch diameter into the conduit E, out of E by passage L to conduit F, and thence through outlet M into the last chamber 0, finally escaping through the brass union J.

It should be observed that the dimensions of the various inlet and outlet holes may be somewhat modified to suit different initial pressures, those given above being calculated to reduce the pressure from about twent -five pounds per square inch to under seventeen pounds until the tank is filled, while doing away with the objectionable hissing sound of rushing water. In many cases the appara tus also acts as a water-waste preventer.

Having fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-= 1. The combination with an inlet-pipe, of a series of chambers connected with each other through small orifices, the said inlet-pipe leading into the first chamber, and an outlet-pipe leading from the last chamber, for the purpose set forth.

2. The combination With an inlet-pipe, of a series of chambers connected with each other through small orifices the said inlet-pipe leading into the first chamber, a partition having small orifices interposed between the inletpipe and the first chamber, and an outletpipe leading from the last chamber, for the purpose set forth.

3. The combination With an inlet-pipe, of a closed chamber into which water passes from said inlet pipe, a second closed chamber connected with the first-mentioned chamber through a conduit having small inlet and outlet orifices, a third closed chamber connected with the second closed chamber through conduits having small inlet and outlet orifices,

JOHN JAMES SPEAR. \Vitnesses:

WVALTER LANGER, ERNEST EDWARD GILLETT. 

